AI want to make a doll cake for my grandaughter's birthday using the Wilton mold, can i use a red velvet cake recipe for it, will it hold up or be to moist? it's going to sit on top of a 9in round cake. Would value any advice thank you. nayjonca

Sure.  It'll be fine.  Make sure it's on it's own board and put 3 or 4 straws in the 9" cake to support it.

AI will, thank you.